It is called a 'pie chart'
it is a circle graph
If, by circle graph, you mean a pie graph then 450 will be 360*450/n degrees where n is the sum of all the sectors of the pie.
Circle graphs are use to illustrate the breakdown of a single variable into its components.
Analysis a circle graph through graphs and sociograms, Kinds of graphs, level of measurement, Each sector represents a part of the whole or circle is then split into parts,or sectors.
You cannot. A circle graph cannot be used to illustrate relationships between two variables.
A circle graph may be used when there is some meaning to the total of the observations. It may be a sensible option when there are at most seven sectors, none of which are too small.
A graph that shows information as parts of a circle is called a pie chart.
CiRcLe GrApH!
A cross section, I believe
A Pie Chart or Circle Graph
This could be called a "Circle Graph" or a "Pie Chart". They are most commonly used for displaying percentages and other statistics.
circle graph= a graph that represents data using sections of a circle. The sum of the percents in a circle graph is 100o/o